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20122024

Research activity per year

Personal profile

Biography

Dr. Qiongkai Xu is a Lecturer in Computing at Macquarie University, having earned his Ph.D. from the Australian National University and previously served as a research fellow at the University of Melbourne. His research primarily focuses on Natural Language Processing, Privacy & Security, Machine Learning and Data Mining. Recently, his attention has been directed towards auditing machine learning models, specifically in two areas: 1) identifying and addressing privacy and security issues in ML/NLP models and their applications and 2) developing comprehensive evaluation theory and methods for ML/NLP models from various perspectives.

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Research interests

My research spans a range of disciplines, with a focus on areas such as Natural Language Processing (NLP), Machine Learning (ML), Security & Privacy, Artificial Intelligence (AI), and Data Mining (DM). I have an active publication record in these fields, such as ACL, EMNLP, NeurIPS, ICLR, AAAI, WWW, WSDM, CIKM. Recently, my focus has shifted to more specific topics, including:

  • Text Watermarking and Fingerprinting (NLP/ML+Security); 
  • Backdoor and Adversarial Attack (NLP/ML+Security+DM); 
  • Data Leakage in Language Model (NLP/ML+Security); 
  • Performance Evaluation (NLP/ML). 

Education/Academic qualification

Natural Language Processing, PhD, Privacy Protection in Conversations, Australian National University

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